Cobweb-thread-imitated structure fog collection thermoforming braided wire and preparation method thereof

Abstract

The invention relates to a cobweb-like structure fog collection thermoforming braided wire and a preparation method thereof, and belongs to the technical field of structural bionic textile materials. The cobweb-like structure fog collection thermoforming braided wire comprises a core layer and a shell layer, the shell layer is formed on the periphery of the core layer, the core layer comprises first yarn, the first yarn is made of at least one of polyethylene fiber, aramid fiber PPTA and carbon fiber, the shell layer comprises third yarn and protrusions, the protrusions are formed on the periphery of the third yarn, and the third yarn is made of polyester fiber. The third yarn is made of one of thermoplastic polyurethane fiber TPU, low-melting-point polyester fiber PET and polyamide yarn fiber PA, and the protrusions are made of one of thermoplastic polyurethane fiber TPU, low-melting-point polyester fiber PET and polyamide yarn fiber PA. A plurality of protrusions are distributed on the surface of the mist collection thermal forming braided wire of the cobweb-like structure in the length direction of the mist collection thermal forming braided wire of the cobweb-like structure. The water collecting performance and the mechanical toughness can be considered and integrated, and the water collecting pipe has wide market prospects and application value.

Description

Technical Field

[0001] The present invention belongs to the technical field of structural bionic textile materials, and specifically relates to a spider silk-like structure fog collection thermoforming braided wire and a preparation method thereof. Background Art

[0002] Freshwater shortage has become a global problem. Fog collection is considered to be a very promising low-cost water collection mechanism. How to effectively utilize water mist resources in the air is an important research topic. Studies have shown that spider silk has a shell-core structure. The core layer provides the main mechanical properties. Its toughness comes from its layered structure. Under the combined effect of the primary and secondary structures of spider silk protein, nanofibrils, "core-shell" and "nanofishnet" structures, spider silk produces high mechanical energy dissipation; the shell layer forms some functionalities, such as excellent water collection and adhesion properties. The micro-nanoscale assembly on the surface of spider silk forms a periodically arranged spindle structure and spaced hydrophilic and hydrophobic regions, generating a surface energy gradient, and different curvatures form a Laplace pressure difference, where the fog condenses and moves in a directional manner, achieving continuous condensation and collection of fog water. Inspired by this spider silk structure, the preparation of efficient fog collection functional materials that mimic spider silk structures has become a research hotspot.

[0003] At present, great progress has been made in the research of bionic spider-like fibers with fog collection functions. The preparation methods of bionic spider-like fibers with fog collection functions include: dip coating, electrospinning, microfluidics, 3D printing, etc. However, due to the principle of Rayleigh instability, electrostatic force, surface tension and shear force, etc., the surface heterogeneous structure of composite fibers is constructed through solvent evaporation, polymer diffusion and phase separation, forming a variety of structural polymer micro-nano fibers including periodic multi-gradient spindle knot connection fibers, thick spindle knot fibers, beaded ultrafine fibers, micro-hump fibers, and asymmetric concave-convex shapes to achieve water collection effects based on surface energy gradient and pressure difference, but most of these methods ignore the toughness of the fibers. Of course, progress has also been made in the preparation of high-strength and tough artificial spider silk. Non-recombinant proteins, recombinant proteins, peptides, synthetic polymers and polymer nanocomposites can be used, and different types of spinning methods, including draw spinning, wet spinning, microfluidic spinning, post-drawing and dynamic cross-linking, can be adopted. The hierarchical structure of the fiber is subtly regulated during the drying process, such as arrangement, phase separation, self-assembly, post-drawing and twisting, thereby producing a variety of fiber materials with high strength and toughness. This method involves a very complex physical and chemical system, which is easily affected by the kinetics and thermodynamic parameters of solvent volatilization and phase separation, and it is difficult to achieve programmed precise design and construction of multi-scale micro-nano assembly structures. However, Chinese patent CN113403697A discloses a programmable spider silk-like fiber and a method for preparing the same. The piezoelectric microfluidic platform is used to customize the piezoelectric signal to control the morphology of the jet, and the jet template is solidified using ultraviolet light to maintain the morphology, thereby obtaining spider silk-like fibers with programmable spacing and section height. Although the morphology of the spider silk-like fiber can be adjusted and controlled, the preparation process is relatively complicated.

[0004] Therefore, the controllable design and precise preparation of spider silk-like fog collection fibers to achieve the water collection performance and / or mechanical toughness of spider silk-like fog collection fibers are technical problems that urgently need to be solved in the field of spider silk-like fog collection fibers. Summary of the invention

[0005] The present invention proposes a spider silk-like structure fog collection thermoforming braided wire and a preparation method thereof, aiming to partially or completely solve the technical problems existing in the spider silk-like fog collection fiber materials in the prior art. The technical solution of the present invention is as follows:

[0006] In a first aspect, a spider silk-like structure mist collection thermoformed braided wire comprises: a core layer and a shell layer, the shell layer is formed on the periphery of the core layer, the core layer comprises a first yarn, the material of the first yarn comprises at least one of polyethylene fiber, aramid fiber PPTA and carbon fiber, the shell layer comprises a third yarn and a protrusion, the protrusion is formed on the periphery of the third yarn, the material of the third yarn comprises one of thermoplastic polyurethane fiber TPU, low-melting point polyester fiber PET, and polyamide yarn fiber PA, the material of the protrusion comprises one of thermoplastic polyurethane fiber TPU, low-melting point polyester fiber PET, and polyamide yarn fiber PA; along the length direction of the spider silk-like structure mist collection thermoformed braided wire, a plurality of protrusions are distributed on the surface of the spider silk-like structure mist collection thermoformed braided wire.

[0007] Optionally, a connecting portion is formed between two adjacent protrusions, the connecting portion connects the third yarn and the first yarn, and the connecting portion connects two adjacent protrusions; and / or, the material of the first yarn is aramid fiber PPTA, the material of the third yarn includes polyamide yarn fiber PA, and the material of the protrusion includes thermoplastic polyurethane fiber TPU.

[0008] In a second aspect, a method for preparing a spider silk-like structure mist collection thermoforming braided wire, preparing any one of the spider silk-like structure mist collection thermoforming braided wires described in the first aspect, comprising:

[0009] Step S100: setting parameters of the first yarn, the second yarn and the third yarn, wherein the parameters of the first yarn include the material of the first yarn and the diameter of the first yarn; the parameters of the second yarn include the material of the second yarn, the diameter of the second yarn and the number of strands Q of the second yarn; the parameters of the third yarn include the material of the second yarn, the diameter of the third yarn and the number of strands Y of the third yarn;

[0010] Step S200: The first yarn is used as the core yarn, and the second yarn and the third yarn are used as the shell yarns. The first yarn, the second yarn and the third yarn are mixed and knitted, and the second yarn and the third yarn are formed on the periphery of the first yarn to obtain the braided yarn;

[0011] Step S300: The braided wire is introduced into a heating mechanism, and the heating mechanism heats the braided wire at a set temperature or a set temperature range. After the set heating time, the heated braided wire leaves the heating mechanism, and the heated braided wire is cooled at room temperature to obtain a spider silk-like structure mist collection thermoformed braided wire.

[0012] Optionally, step S100 includes:

[0013] Step S101: setting parameters of the first yarn, the parameters of the first yarn include the material of the first yarn, the diameter of the first yarn, the material of the first yarn includes at least one of polyethylene fiber, aramid fiber PPTA and carbon fiber; the diameter of the first yarn is 600D-1800D;

[0014] Step S102: setting parameters of the second yarn, the parameters of the second yarn include the material of the second yarn, the diameter of the second yarn, and the number of strands Q of the second yarn; the material of the second yarn includes one of thermoplastic polyurethane fiber TPU, low melting point polyester fiber PET, and polyamide yarn fiber PA, and the diameter of the second yarn is 50D-300D;

[0015] Step S103: Set the parameters of the third yarn, the parameters of the third yarn include the material of the second yarn, the diameter of the third yarn, and the number of strands of the third yarn Y; the material of the third yarn includes one of thermoplastic polyurethane fiber TPU, low melting point polyester fiber PET, and polyamide yarn fiber PA; the diameter of the second yarn is 50D-300D.

[0016] Optionally, step S200 includes:

[0017] Step S201: a first yarn feeding mechanism feeds a first yarn, Q second yarn feeding mechanisms are provided, each second yarn feeding mechanism feeds a second yarn, and Y third yarn feeding mechanisms are provided, each third yarn feeding mechanism feeds a third yarn;

[0018] Step S202: Use the first yarn as the core yarn, the second yarn and the third yarn as the shell yarn, the weaving pitch is 1-8mm, the weaving speed is 800r / min-1500r / min, the weaving pattern is one-on-one, the first yarn, the second yarn and the third yarn are mixed, and the second yarn and the third yarn are formed on the periphery of the first yarn to obtain the weaving yarn.

[0019] Optionally, the second yarn strand number Q and the third yarn strand number Y satisfy: Q+Y=QY, where QY is a preset strand number.

[0020] Optionally, the preset number of strands QY is 8 strands, the weaving pitch is 2 mm or 3 mm, the weaving speed is 800 r / min or 1000 r / min, the set temperature of the heating mechanism is 50°C-200°C, and the set time is 5s-120s.

[0021] Optionally, the material of the first yarn is aramid fiber PPTA, the material of the second yarn includes thermoplastic polyurethane fiber TPU, the third yarn includes polyamide yarn fiber PA, and the width w of the protrusion, the height h of the protrusion, and the diameter D of the braided blank wire satisfy:

[0022]

[0023] Among them, w is the width of a protrusion when projected vertically downward along the direction of the central axis of the spider silk structure fog collection thermoforming braided wire; h is the height of the protrusion along the cross-sectional direction of the spider silk structure fog collection thermoforming braided wire; and D is the diameter of the braided blank wire.

[0024] The beneficial effects achieved by the present invention are as follows:

[0025] (1) In the present application, when the material of the first yarn is aramid fiber PPTA, the material of the second yarn includes thermoplastic polyurethane fiber TPU, and the third yarn includes polyamide yarn fiber PA, the protrusions and the connecting parts both include thermoplastic polyurethane fiber TPU, the thermoplastic polyurethane fiber TPU is super hydrophobic, and the polyamide yarn fiber PA of the third yarn between adjacent protrusions is super hydrophilic. On the basis of the difference in hydrophilicity and hydrophobicity between the protrusions and the third yarn, the Laplace pressure difference formed by the periodic arrangement of the protrusions enables the braided wire to have the function of fog collection; at the same time, the diameter D of the braided blank wire can be set, and the width and height of the protrusions can be set according to the above formula. Along the length direction of the spider silk structure fog collection thermoforming braided wire, a plurality of protrusions are distributed on the surface of the spider silk structure fog collection thermoforming braided wire, thereby realizing the customized setting of the surface structure of the spider silk structure fog collection thermoforming braided wire. The arrangement and size of multiple protrusions can realize different fog collection capabilities of the spider silk structure fog collection thermoforming braided wire; the aramid fiber PPTA provides the spider silk structure fog collection thermoforming braided wire with sufficient tensile strength and durability, thereby the spider silk structure fog collection thermoforming braided wire realizes the consideration and integration of water collection performance and mechanical toughness, and the spider silk structure fog collection thermoforming braided wire has broad market prospects and application value.

[0026] (2) In the present application, through reasonable yarn selection and precise multiple yarn feeding mechanisms of the spider silk structure-like fog collection thermoforming braided wire preparation device, appropriate braiding pitch, braiding speed, braiding pattern and mixed braiding settings, the strength, toughness and durability of the obtained braided blank wire are ensured, the heating mechanism heats the braided blank wire at a set temperature or a set temperature range, after the set heating time, the heated braided blank wire is cooled under room temperature to obtain a spider silk structure-like fog collection thermoforming braided wire, a plurality of protrusions are distributed on the surface of the spider silk structure-like fog collection thermoforming braided wire, the surface structure of the spider silk structure-like fog collection thermoforming braided wire is customized, and the preparation process of the spider silk structure-like fog collection thermoforming braided wire is highly customized and scaled, providing a flexible and efficient preparation solution for different needs of spider silk structure-like fog collection thermoforming braided wires, and the preparation process of the spider silk structure-like fog collection thermoforming braided wire is a green process, which will not cause physical and chemical pollution to the environment and has good ecological environmental friendliness. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0028] Figure 1 This is a schematic diagram of the structure of the spider silk-like structure mist collection thermoformed braided wire applied for in the present invention.

[0029] Figure 2 This is a schematic diagram of the cross-sectional structure of the spider silk-like structure mist collection thermoformed braided wire applied for in the present invention.

[0030] Figure 3 A schematic flow chart of a method for preparing a spider silk-like structure mist-collecting thermoformed braided wire applied for by the present invention.

[0031] Figure 4 This is a schematic structural diagram of the device for preparing the spider silk-like structure mist-collecting thermoformed braided wire applied for in the present invention.

[0032] Figure 5 This is a schematic diagram of the structure of the surface of the braided wire applied for in the present invention.

[0033] Figure 6 This is a schematic diagram of the cross-sectional structure of the surface of the braided wire applied for in the present invention.

[0034] Figure 7 This is a simplified structural diagram of the braided wire model applied for by the present invention.

[0035] Figure 8 A schematic diagram of the Pythagorean theorem of the surface of the braided wire applied for in the present invention.

[0036] Fig. 9 This is a schematic structural diagram of the second exposed portion and protrusion of the present invention.

[0037] Fig.10 It is a schematic diagram of the DSC curves of the aramid fiber PPTA, thermoplastic polyurethane fiber TPU, and polyamide yarn fiber PA applied for in the present invention.

[0038] Fig.11 It is a schematic diagram of the infrared curves of the aramid fiber PPTA, thermoplastic polyurethane fiber TPU, and polyamide yarn fiber PA applied for in the present invention.

[0039] Fig.12 It is a schematic diagram of the water contact angle diagrams of the aramid fiber PPTA, thermoplastic polyurethane fiber TPU, and polyamide yarn fiber PA applied for in the present invention.

[0040] Fig.13 A comparison diagram of the fog collection effect of the spider silk-like fog collection thermoformed braided wire applied for by the present invention and the existing PPTA braided wire;

[0041] Fig.14 Schematic diagram comparing the fog collection effects of the spider silk-like structure fog-collecting thermoformed braided wire A of Example 1, the fog collection effects of the spider silk-like structure fog-collecting thermoformed braided wire B of Example 2, and the fog collection effects of the spider silk-like structure fog-collecting thermoformed braided wire C of Example 3 of the present invention.

[0042] Fig.15 It is a schematic diagram comparing the tensile fracture stress-strain curves of the spider silk structure mist collection thermoformed braided wire C before and after heat treatment of Example 3 of the present invention, the tensile fracture stress-strain curves of the spider silk structure mist collection thermoformed braided wire D before and after heat treatment of Example 4, and the tensile fracture stress-strain curves of the spider silk structure mist collection thermoformed braided wire E before and after heat treatment of Example 5.

[0043] Fig.16 Schematic diagram comparing the wear resistance of the spider silk structure mist collection thermoformed braided wire A of Example 1, the wear resistance of the spider silk structure mist collection thermoformed braided wire B of Example 2, and the wear resistance of the spider silk structure mist collection thermoformed braided wire C of Example 3.

[0044] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments; based on the embodiments in the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] In the description of the present invention application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside" and the like indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention application. "Including" can at least be understood as the meaning of only including, and the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", and "third" may explicitly or implicitly include one or more of the features. In the description of the present invention application specification, the meaning of "multiple" is two or more.

[0047] In order to make the purpose, technical solutions and advantages of the present invention more clear, the implementation methods of the present invention will be further described in detail below with reference to the accompanying drawings.

[0048] Spider silk structure mist collection thermoformed braided wire description

[0049] like Figure 1 , Figure 2 As shown, the first aspect includes: a core layer and a shell layer, the shell layer is formed on the periphery of the core layer, the core layer includes a first yarn 10, the material of the first yarn 10 includes at least one of polyethylene fiber, aramid fiber PPTA and carbon fiber, the shell layer includes a third yarn 20 and a protrusion 30, the protrusion 30 is formed on the periphery of the third yarn 20, the material of the third yarn 20 includes one of thermoplastic polyurethane fiber TPU, low-melting point polyester fiber PET, and polyamide yarn fiber PA, and the material of the protrusion includes one of thermoplastic polyurethane fiber TPU, low-melting point polyester fiber PET, and polyamide yarn fiber PA; along the length direction of the spider silk structure imitation fog collection thermoformed braided wire, a plurality of protrusions 30 are distributed on the surface of the spider silk structure imitation fog collection thermoformed braided wire.

[0050] In some embodiments, the core layer includes a first yarn, and the material of the first yarn includes at least one of polyethylene fiber, aramid fiber PPTA and carbon fiber. Polyethylene fiber has extremely high strength and rigidity, and its strength is higher than that of steel, but it is extremely light and has excellent impact resistance and wear resistance. Polyethylene fiber also performs well in corrosion resistance and can be used for a long time in harsh environments; aramid fiber PPTA has extremely high tensile strength and heat resistance, can maintain its physical properties in high temperature environments, and has strong tensile and tear resistance. Aramid fiber also has good flexibility and can provide comfort and flexibility. PPTA fiber is widely used in protective equipment, aerospace, and automotive industries; carbon fiber is known for its excellent strength, rigidity and light weight, low density, high strength, excellent bending resistance and tensile strength, which can effectively improve the performance and durability of the product. At the same time, its high temperature resistance and corrosion resistance also make it used in many high-end fields.

[0051] In some embodiments, the shell layer includes a third yarn and a protrusion, the protrusion is formed on the periphery of the third yarn, the material of the third yarn includes one of thermoplastic polyurethane fiber TPU, low-melting point polyester fiber PET, and polyamide yarn fiber PA, and the material of the protrusion includes one of thermoplastic polyurethane fiber TPU, low-melting point polyester fiber PET, and polyamide yarn fiber PA. Thermoplastic polyurethane fiber (TPU) is a high-performance elastomeric material with excellent wear resistance, oil resistance and chemical corrosion resistance; low-melting point polyester fiber (PET) is a widely used synthetic fiber with high mechanical strength, heat resistance and good processability. PET fiber has relatively good hygroscopicity, is comfortable to wear, and has good air permeability. PET fiber can be easily dyed and can be woven or knitted in a variety of ways to meet production processes with different needs. It is widely used in clothing and home textile products; polyamide yarn fiber PA is a synthetic fiber with excellent comprehensive properties, with extremely high tensile strength, tear resistance and good wear resistance. PA fiber has good hygroscopicity, is comfortable to wear, and has good air permeability in warm climates. It is widely used in textile, industrial and automotive fields.

[0052] In some embodiments, the protrusion and the third yarn form a difference in hydrophilicity and hydrophobicity. For example, the protrusion may be hydrophilic and the third yarn may be hydrophobic; or, the protrusion may be hydrophobic and the third yarn may be hydrophilic. In some embodiments, the material of the protrusion 30 includes one of thermoplastic polyurethane fiber TPU and low-melting polyester fiber PET, and the material of the third yarn 20 includes polyamide yarn fiber PA; or, the material of the third yarn 20 includes one of thermoplastic polyurethane fiber TPU and low-melting polyester fiber PET, and the material of the protrusion 30 includes polyamide yarn fiber PA.

[0053] In the spider silk structure fog collection thermoformed braided wire applied for by the present invention, the spider silk structure fog collection thermoformed braided wire includes a core layer and a shell layer. The core layer can generally include a first yarn. The first yarn (such as aramid fiber, carbon fiber, etc.) can provide sufficient structural support to ensure that the braided wire is not easy to break or deform during use. The material of the core layer can effectively improve the tensile strength and durability of the spider silk structure fog collection thermoformed braided wire, which is suitable for application scenarios that need to withstand large tensile forces. The core layer material can generally also have lightweight characteristics, which can enable the spider silk structure braided wire to maintain a lower overall mass, facilitate transportation and installation, and improve its use efficiency; the shell layer generally includes a combination of a third yarn and protrusions. The shell layer can have wear-resistant, UV-resistant and other properties, and can adapt to the use requirements in harsh environments. , to prevent the external climate from affecting its performance; the shell surface may include protrusions, the protrusions may be micron-sized structures, the micron-sized structures may have an extremely high surface area, and can effectively cause water droplets to gather on the surface of the spider silk-like structure fog collection thermoforming braided wire, along the length direction of the spider silk-like structure fog collection thermoforming braided wire, a plurality of protrusions are distributed on the surface of the braided wire, and at the same time, along the cross-sectional direction of the spider silk-like structure fog collection thermoforming braided wire, a plurality of protrusions are also distributed on the periphery of the braided wire surface, and a plurality of protrusions can imitate the arrangement of spider silk, thereby improving the efficiency of fog collection, so that the spider silk-like structure fog collection thermoforming braided wire can achieve a balance and integration of water collection performance and mechanical toughness, and the shell layer is formed on the periphery of the core layer, which further helps to improve the overall strength and service life of the spider silk-like structure fog collection thermoforming braided wire.

[0054] Optionally, a connecting portion 40 is formed between two adjacent protrusions, the connecting portion 40 connects the third yarn 20 and the first yarn 10, and the connecting portion connects two adjacent protrusions 30; and / or, the material of the first yarn 10 is aramid fiber PPTA, the material of the third yarn 20 includes polyamide yarn fiber PA, and the materials of the connecting portion and the protrusion both include thermoplastic polyurethane fiber TPU.

[0055] In the present application, firstly, along the length direction of the braided wire, a plurality of protrusions may be distributed on the surface of the braided wire, and a connecting portion 40 is formed between two adjacent protrusions, the connecting portion 40 connects the third yarn and the first yarn, and the connecting portion connects two adjacent protrusions, and the material of the connecting portion also includes one of thermoplastic polyurethane fiber TPU, low melting point polyester fiber PET, and polyamide yarn fiber PA. At the same time, along the cross-sectional direction of the spider silk structure fog collection thermoforming braided wire, a plurality of connecting portions are also distributed on the periphery of the braided wire, and the surface structure of the spider silk structure fog collection thermoforming braided wire can be customized, and the arrangement and size of the plurality of protrusions can achieve different fog collection capabilities of the spider silk structure fog collection thermoforming braided wire; in addition, when the material of the first yarn is aramid fiber PPTA, the material of the third yarn 20 includes polyamide yarn fiber PA, and the materials of the connecting portion and the protrusion both include thermoplastic polyurethane fiber TPU, the protrusion and the connecting portion both include thermoplastic polyurethane fiber TPU, and the thermoplastic polyurethane fiber TPU is super hydrophobic, and the polyamide yarn fiber PA of the third yarn between adjacent protrusions is super hydrophilic. Based on the difference in hydrophilicity and hydrophobicity between the protrusions and the third yarn, the Laplace pressure difference formed by the periodic arrangement of the protrusions enables the braided wire to have the function of fog collection; in addition, the aramid fiber PPTA provides sufficient tensile strength and durability for the spider silk structure fog collection thermoforming braided wire, and thus the spider silk structure fog collection thermoforming braided wire achieves the consideration and integration of water collection performance and mechanical toughness, and the spider silk structure fog collection thermoforming braided wire has broad market prospects and application value.

[0056] Description of the method for preparing the spider silk structure fog collection thermoformed braided wire

[0057] like Figure 3 As shown, in the second aspect, a method for preparing a spider silk-like structure mist collection thermoforming braided wire, preparing any one of the spider silk-like structure mist collection thermoforming braided wires described in the first aspect, comprising:

[0058] Step S100: setting parameters of the first yarn, the second yarn and the third yarn, wherein the parameters of the first yarn include the material of the first yarn and the diameter of the first yarn; the parameters of the second yarn include the material of the second yarn, the diameter of the second yarn and the number of strands Q of the second yarn; the parameters of the third yarn include the material of the second yarn, the diameter of the third yarn and the number of strands Y of the third yarn;

[0059] Specifically, step S100 includes:

[0060] Step S101: setting parameters of the first yarn, the parameters of the first yarn include the material of the first yarn, the diameter of the first yarn, the material of the first yarn includes at least one of polyethylene fiber, aramid fiber PPTA and carbon fiber; the diameter of the first yarn is 600D-1800D;

[0061] Step S102: setting parameters of the second yarn, the parameters of the second yarn include the material of the second yarn, the diameter of the second yarn, and the number of strands Q of the second yarn; the material of the second yarn includes one of thermoplastic polyurethane fiber TPU, low melting point polyester fiber PET, and polyamide yarn fiber PA, and the diameter of the second yarn is 50D-300D;

[0062] Step S103: Set the parameters of the third yarn, the parameters of the third yarn include the material of the second yarn, the diameter of the third yarn, and the number of strands of the third yarn Y; the material of the third yarn includes one of thermoplastic polyurethane fiber TPU, low melting point polyester fiber PET, and polyamide yarn fiber PA; the diameter of the second yarn is 50D-300D.

[0063] In some embodiments, in step S101, the material of the first yarn is selected from at least one of polyethylene fiber, aramid fiber PPTA, and carbon fiber. Polyethylene fiber, aramid fiber PPTA, and carbon fiber all have excellent strength and durability, and can enhance the carrying capacity of the braided wire, so that it can still maintain good stability in high-intensity tension and friction environments, especially aramid fiber PPTA and carbon fiber, which can significantly improve the tensile strength and tear resistance of the spider silk structure fog collection thermoforming braided wire; by setting the diameter of the first yarn to 600D-1800D, the thickness and strength of the spider silk structure fog collection thermoforming braided wire can be accurately controlled to adapt to different application requirements.

[0064] In some embodiments, first, in step S102 and step S103, the material of the second yarn material and the material of the third yarn material are selected from at least one of thermoplastic polyurethane fiber TPU, low melting point polyester fiber PET, and polyamide yarn fiber PA. Thermoplastic polyurethane fiber TPU, low melting point polyester fiber PET, and polyamide yarn fiber PA can maintain strength while also having good flexibility, hygroscopicity, air permeability, and thermal processing performance; in addition, the setting of the second yarn strand number Q and the third yarn strand number Y determines the structural tightness and strength of the spider silk structure fog collection thermoforming braided wire, which can be achieved by setting the second yarn strand number Q and the third yarn strand number Y. The combination of the number of strands Q and the number of strands Y of the third yarn improves the flexibility and tensile strength of the yarn, and can also increase the wear resistance and tear resistance of the spider silk structure fog collection thermoforming braided wire; at the same time, the diameter of the second yarn and the diameter of the third yarn are both in the range of 50D-300D. By setting the combination of the diameter of the second yarn and the diameter of the third yarn, the spider silk structure fog collection thermoforming braided wire can have good softness and fog capture ability, meet the requirements of strength, flexibility, durability, wear resistance, temperature resistance and other properties in different application scenarios, and obtain a spider silk structure fog collection thermoforming braided wire that takes into account water collection and wear resistance and tear resistance.

[0065] In some embodiments, the protrusion and the third yarn form a difference in hydrophilicity and hydrophobicity. For example, the protrusion may be hydrophilic and the third yarn may be hydrophobic; or, the protrusion may be hydrophobic and the third yarn may be hydrophilic. In some embodiments, the material of the protrusion 30 includes one of thermoplastic polyurethane fiber TPU and low-melting polyester fiber PET, and the material of the third yarn 20 includes polyamide yarn fiber PA; or, the material of the third yarn 20 includes one of thermoplastic polyurethane fiber TPU and low-melting polyester fiber PET, and the material of the protrusion 30 includes polyamide yarn fiber PA.

[0066] Step S200: The first yarn is used as the core yarn, and the second yarn and the third yarn are used as the shell yarns. The first yarn, the second yarn and the third yarn are mixed and knitted, and the second yarn and the third yarn are formed on the periphery of the first yarn to obtain the braided yarn;

[0067] Specifically, step S200 includes:

[0068] Step S201: a first yarn feeding mechanism feeds a first yarn, Q second yarn feeding mechanisms are provided, each second yarn feeding mechanism feeds a second yarn, and Y third yarn feeding mechanisms are provided, each third yarn feeding mechanism feeds a third yarn;

[0069] Step S202: Use the first yarn as the core yarn, the second yarn and the third yarn as the shell yarn, the weaving pitch is 1-8mm, the weaving speed is 800r / min-1500r / min, the weaving pattern is one-on-one, the first yarn, the second yarn and the third yarn are mixed, and the second yarn and the third yarn are formed on the periphery of the first yarn to obtain the weaving yarn.

[0070] Step S300: The braided wire is introduced into a heating mechanism, and the heating mechanism heats the braided wire at a set temperature or a set temperature range. After the set heating time, the heated braided wire leaves the heating mechanism, and the heated braided wire is cooled at room temperature to obtain a spider silk-like structure mist collection thermoformed braided wire.

[0071] In some embodiments, Figure 3As shown, the method for preparing a spider silk structure mist collection thermoforming braided wire includes a spider silk structure mist collection thermoforming braided wire preparation device, and the spider silk structure mist collection thermoforming braided wire preparation device 1000 includes: a first yarn feeding mechanism 1001, Q second yarn feeding mechanisms 1002, Y third yarn feeding mechanisms 1003, a weaving mechanism 1004, a pulling mechanism 1005, a winding mechanism 1006, a heating mechanism 1007 and a collecting mechanism 1008, and the weaving mechanism drives the Q second yarn feeding mechanisms and the Y third yarn feeding mechanisms to rotate The first yarn feeding mechanism, Q second yarn feeding mechanisms, and Y third yarn feeding mechanisms feed the first yarn, the second yarn, and the third yarn respectively. The weaving mechanism uses the first yarn as the core yarn, the second yarn and the third yarn as the shell yarn. The weaving pitch is 1-8mm, the weaving speed is 800r / min-1500r / min, the weaving pattern is one-on-one, the first yarn, the second yarn, and the third yarn are mixed, and the second yarn and the third yarn are formed on the periphery of the first yarn to obtain the weaving blank yarn.

[0072] Therefore, when the first yarn is unwound from the first yarn feeding mechanism, the unwound first yarn, the second yarn and the third yarn are mixed and woven to form a braided yarn, and the braided yarn passes through the pulling mechanism, the winding mechanism and the heating mechanism in turn and enters the collecting mechanism. The pulling mechanism pulls the braided yarn, and the winding mechanism drives the braided yarn into the heating mechanism; the braided yarn heated by the heating mechanism is cooled at room temperature, and the collecting mechanism performs a corresponding winding operation through the winding and collecting device, thereby collecting the spider silk structure-imitation mist-collected thermoformed braided yarn.

[0073] In some embodiments, Figure 4 As shown, there are Q second yarn feeding mechanisms, Q is a positive integer, and each second yarn feeding mechanism feeds the second yarn. There are Y third yarn feeding mechanisms, Y is a positive integer, and each third yarn feeding mechanism feeds the third yarn, thereby ensuring the uniform feeding of each yarn and the stability of the weaving process; at the same time, the first yarn feeding mechanism, Q second yarn feeding mechanisms and Y third yarn feeding mechanisms can respectively accurately control the feed amount and speed of the first yarn, the second yarn and the third yarn, thereby effectively avoiding yarn waste or breakage caused by excessive tension, and improving the continuity and stability of production.

[0074] In some embodiments, Figure 3As shown, the weaving mechanism drives Q second yarn feeding mechanisms and Y third yarn feeding mechanisms to rotate, with a weaving pitch of 1-8mm, a weaving speed of 800r / min-1500r / min, and a one-press-one weaving pattern method to mix the first yarn, the second yarn and the third yarn, and the second yarn and the third yarn are formed on the periphery of the first yarn to obtain the braided blank wire. The one-press-one weaving pattern method can make the structure of the braided blank wire more compact and uniform, enhance the bonding force between each yarn, help to improve the tensile strength and tear resistance of the braided blank wire, and the regularity of the weaving pattern also ensures the neat appearance of the braided blank wire; at the same time, the first yarn, the second yarn and the third yarn are mixed, and multiple functions can be realized on the same braided blank wire, and the strength, toughness, durability and functional diversity of the braided blank wire can be improved.

[0075] In some embodiments, the first yarn feeding mechanism, the second yarn feeding mechanism, and the third yarn feeding mechanism may include a yarn feeding wheel, a motor, a yarn guiding mechanism, etc. These are existing technologies in the existing textile technology field, and the present invention application will not elaborate on them. The pulling mechanism may include: a traction roller, a tension control device, and an electric motor. The pulling mechanism pulls the braided blank wire and ensures that the tension of the braided blank wire is moderate. The winding mechanism includes a winding roller, a driving device, a winding tension controller, etc. The winding mechanism winds the braided blank wire and ensures the tightness and shape stability of the braided blank wire by controlling the winding tension and speed to avoid loosening or deformation of the braided blank wire. The collecting mechanism includes a guide device and a reel. The collecting mechanism collects the spider silk structure fog collection thermoforming braided wire neatly onto the reel, ensuring that the spider silk structure fog collection thermoforming braided wire is neatly arranged in a predetermined manner, which is convenient for subsequent storage, packaging or further processing.

[0076] In some embodiments, a spider silk structure fog collection thermoforming braided wire prepared by a method for preparing a spider silk structure fog collection thermoforming braided wire, the second yarn will be used to form protrusions and connecting parts after heat treatment, and the final spider silk structure fog collection thermoforming braided wire at least includes: along the length direction of the spider silk structure fog collection thermoforming braided wire, a plurality of protrusions are distributed on the surface of the spider silk structure fog collection thermoforming braided wire, along the cross-sectional direction of the spider silk structure fog collection thermoforming braided wire, a plurality of protrusions are also distributed on the periphery of the braided wire surface, a connecting part is formed between two adjacent protrusions, the connecting part connects the third yarn and the first yarn, and the connecting part connects two adjacent protrusions.

[0077] In the method for preparing the spider silk structure-like mist collection thermoforming braided wire applied by the present invention, the first yarn is rolled out from the first yarn feeding mechanism and the collecting mechanism is correspondingly rolled in through the winding and collecting device, which can form a process operation match in the method for preparing the spider silk structure-like mist collection thermoforming braided wire, and the strength, toughness and durability of the obtained braided blank wire can be ensured by reasonable yarn selection and precise multiple yarn feeding mechanisms of the spider silk structure-like mist collection thermoforming braided wire preparation device, appropriate braiding pitch, braiding speed, braiding pattern and mixed braiding settings, the heating mechanism heats the braided blank wire at a set temperature or a set temperature range, and the heating set time After that, the heated braided blank wire can be cooled at room temperature to obtain a spider silk structure fog collection thermoforming braided wire. The spider silk structure fog collection thermoforming braided wire has multiple protrusions distributed on its surface, which realizes the customized setting of the surface structure of the spider silk structure fog collection thermoforming braided wire, and also realizes the high customization and scale of the preparation process of the spider silk structure fog collection thermoforming braided wire, which provides a flexible and efficient preparation solution for the needs of different spider silk structure fog collection thermoforming braided wires. Moreover, the preparation process of the spider silk structure fog collection thermoforming braided wire is a green process, which will not cause physical and chemical pollution to the environment and has good ecological environmental friendliness.

[0078] Optionally, the second yarn strand number Q and the third yarn strand number Y satisfy: Q+Y=QY, where QY is a preset strand number.

[0079] In some embodiments, the preset number of strands QY can be 6 strands, 7 strands, 8 strands, 9 strands, 10 strands, etc. Of course, those skilled in the art can also reasonably set the preset number of strands QY according to actual conditions, and the present invention application does not impose any particular limitation on this.

[0080] In some embodiments, the first yarn includes first monofilaments, and each of the first yarns includes n first monofilaments. 1 Each second yarn includes a second monofilament, and the number of second monofilaments included in each second yarn is n. 2 , each third yarn includes a third monofilament, and the number of the third monofilaments included in each third yarn is n 3 .

[0081] In some embodiments, Figure 5 As shown, the structural diagram of the surface of the braided blank wire; Figure 6 As shown, it is a schematic diagram of the cross-sectional structure of the braided yarn. By way of example, the number of strands of the second yarn is 1 and the number of strands of the third yarn is 7.

[0082] In some embodiments, Figure 7As shown, a simplified model structure diagram of the braided wire is shown. If the second yarn is woven around the braided wire to form a spiral winding, each time the second yarn completes a complete winding cycle (i.e. corresponding to a braiding pitch P), during a complete winding cycle, the length of the trajectory traversed by the second yarn (which can be recorded as the spiral length R of the second yarn) is approximately the length of the spiral line based on the central axis of the braided wire.

[0083] In some embodiments, Figure 8 As shown, a schematic diagram of the Pythagorean principle of the braided wire is shown. According to the Pythagorean theorem, for an approximate spiral wire, within the length of a braiding pitch P, the spiral wire of the second yarn can be regarded as the hypotenuse of a right triangle after being unfolded, one right-angled side is the braiding pitch P, and the other right-angled side is a value based on the perimeter πD of the braided wire. Accordingly, assuming that the winding angle of the second yarn is relatively stable, the spiral length R of the second yarn, the diameter D of the braided wire and the braiding pitch P of the braided wire satisfy the relationship:

[0084] π 2 D 2 +P 2 =R 2 (1)

[0085] Where D is the diameter of the braided yarn and R is the helical length of the second yarn during a complete winding cycle.

[0086] In some embodiments, Figure 5 As shown, the portion of the second yarn exposed on the surface of the braided yarn (which can be recorded as the second yarn exposed portion 201) becomes a protrusion 30 after the heating mechanism heat treats the portion of the second yarn exposed on the surface of the braided yarn, and then along the length direction of the spider silk structure mist collection thermoforming braided wire, a plurality of protrusions 30 are distributed on the surface of the spider silk structure mist collection thermoforming braided wire. According to the principle of constant volume before and after heat treatment, the volume relationship between the second exposed portion and the protrusion satisfies:

[0087] V M =V E (2)

[0088] Among them, V M is the volume of a second exposed portion 201 on the surface of the braided wire, V E is the volume of a protrusion formed on the surface of a second exposed portion 201 after heat treatment by the heating mechanism, correspondingly:

[0089]

[0090] L a is the length of the exposed portion of the second yarn, d 2n represents the diameter of the second monofilament constituting the second yarn; 2 is the number of second monofilaments in the second yarn, vertically projected downward along the direction perpendicular to the central axis of the spider silk structure mist collection thermoforming braided wire (which can mean a top view), w is the width of a complete protrusion, l is the length of a complete protrusion, along the cross-sectional direction of the spider silk structure mist collection thermoforming braided wire, h is the height of the protrusion, h 1 is the inner height of the protrusion.

[0091] In some embodiments, Figure 5 As shown, in a complete winding cycle, the third yarn will cover part of the second yarn, the width H of the third yarn, the spiral length R of the second yarn and the length L of the exposed portion 201 of the second yarn a Satisfaction relationship:

[0092]

[0093] Wherein, H is the yarn width of the third yarn during a complete winding cycle.

[0094] In some embodiments, the first yarn and the third yarn satisfy the relationship:

[0095]

[0096] Among them, D 1 is the diameter of the first yarn, S 1 is the cross-sectional area of ​​the first yarn, n 1 is the number of first filaments in the first yarn, s 1 is the cross-sectional area of ​​the first monofilament, d 1 The diameter of the first monofilament constituting the first yarn; S 3 is the cross-sectional area of ​​the third yarn, n 3 is the number of third filaments in the third yarn, s 3 is the cross-sectional area of ​​the third monofilament, d 3 a diameter of a third monofilament constituting the third yarn;

[0097] In some embodiments, the inner height h of the protrusion 1 , the length l of the protrusion satisfies:

[0098]

[0099] Among them, T 3 Represents the cross-sectional thickness of the third yarn.

[0100] Accordingly, the width w of the protrusion, the height h of the protrusion, and the diameter D of the braided wire satisfy:

[0101]

[0102] Therefore, in step S100, using the above formula (9), except for the height h, width w and braided wire diameter D of the protrusion, all other parameters are known parameters and can be substituted into the above formula (9) for calculation. Of course, the diameter D of the braided wire can also be preset, and the width and height of the protrusion can be preset according to the above formula (9). Along the length direction of the braided wire, the number of protrusions on the surface of the braided wire can be preset, so as to realize the customized setting of the surface structure of the spider silk structure fog collection thermoforming braided wire.

[0103] Optionally, the material of the first yarn is aramid fiber PPTA, the material of the second yarn includes thermoplastic polyurethane fiber TPU, the third yarn includes polyamide yarn fiber PA, and the width w of the protrusion, the height h of the protrusion, and the diameter D of the braided blank wire satisfy:

[0104]

[0105] Among them, w is the width of a protrusion when projected vertically downward along the direction of the central axis of the spider silk structure fog collection thermoforming braided wire; h is the height of the protrusion along the cross-sectional direction of the spider silk structure fog collection thermoforming braided wire; and D is the diameter of the braided blank wire.

[0106] In some embodiments, according to the respective geometric parameters of the aramid fiber PPTA, the thermoplastic polyurethane fiber TPU and the polyamide yarn fiber PA, the aramid fiber diameter d 1 The diameter of thermoplastic polyurethane fiber TPU is 0.605um. 2 The diameter of the polyamide yarn fiber PA is 210um. 3 4.17um, n 3 =48,n 2 =1,n 1 =400, P = 2000um, the width w of the protrusion, the height h of the protrusion, and the diameter D of the braided wire meet the following conditions:

[0107]

[0108]

[0109] The cross-sectional thickness T of the third yarn 3 It can be approximately equal to 0, that is:

[0110]

[0111] Therefore, in the present application, when the material of the first yarn is aramid fiber PPTA, the material of the second yarn includes thermoplastic polyurethane fiber TPU, and the third yarn includes polyamide yarn fiber PA, the diameter D of the braided wire can be set by using the above formula (9) and the above formula (10), and the width and height of the protrusion can be set according to the above formula (9) and the above formula (10). Along the length direction of the braided wire, a plurality of protrusions can be distributed on the surface of the braided wire, thereby realizing a customized setting of the surface structure of the spider silk structure fog collection thermoforming braided wire. On the basis of the difference in hydrophilicity and hydrophobicity between the protrusions and the third yarn, due to the periodic arrangement of the protrusions, a Laplace pressure difference is formed, and the arrangement and size of the plurality of protrusions can realize different fog collection capabilities of the spider silk structure fog collection thermoforming braided wire. At the same time, the aramid fiber PPTA provides the spider silk structure fog collection thermoforming braided wire with sufficient tensile strength and durability, thereby achieving a balance and integration of water collection performance and mechanical toughness. The spider silk structure fog collection thermoforming braided wire has broad market prospects and application value.

[0112] Optionally, the preset number of strands QY is 8 strands, the weaving pitch is 2 mm or 3 mm, the weaving speed is 800 r / min or 1000 r / min, the set temperature of the heating mechanism is 50°C-200°C, and the set time is 5s-120s.

[0113] In some embodiments, the set temperature of the heating mechanism is 50°C-200°C, such as 50°C, 60°C, 90°C, 100°C, 105°C, 110°C, 120°C, 125°C, 130°C, 140°C, 150°C, 160°C, 180°C, 200°C, or the numerical range between the above values; the set time is 5s-120s, such as 5s, 10s, 20s, 25s, 30s, 35s, 40s, 50s, 60s, 70s, 80s, 120s, or the numerical range between the above values. Of course, those skilled in the art can reasonably set the size of the heating temperature and the set time according to actual conditions, and the present invention application does not impose any special restrictions on this.

[0114] Spider silk structure fog collection thermoformed braided wire Example 1, Example 2, Example 3, Example 4, Example 5

[0115] In Examples 1 to 5, the material of the first yarn is aramid fiber PPTA, the material of the second yarn is thermoplastic polyurethane fiber TPU, and the material of the third yarn is polyamide yarn fiber PA.

[0116] like Fig.10As shown, the heating temperature is determined according to the DSC test results. The heating temperature can be set to be greater than 53.6 degrees. At this time, the thermoplastic polyurethane fiber TPU can be completely melted, and the aramid fiber PPTA is not affected. Correspondingly, the surface structure of the spider silk structure fog collection thermoforming braided wire can be changed. At the same time, the aramid fiber PPTA is used to retain the mechanical properties of the spider silk structure fog collection thermoforming braided wire to the greatest extent.

[0117] like Fig.11 and Fig.12 As shown, according to the infrared curves of aramid fiber PPTA, thermoplastic polyurethane fiber TPU, and polyamide yarn fiber PA, the water contact angle of aramid fiber PPTA is 42 degrees, the water contact angle of thermoplastic polyurethane fiber TPU is 28.5 degrees, and the water contact angle of polyamide yarn fiber PA is 104 degrees. It can be seen that aramid fiber PPTA is hydrophilic, polyamide yarn fiber PA is super hydrophilic, and thermoplastic polyurethane fiber TPU is hydrophobic.

[0118] Example 1: Spider silk-like structure fog collection thermoformed braided wire A with large protrusion volume

[0119] Step S11: Setting the parameters of the first yarn, the second yarn and the third yarn, the material of the first yarn is aramid fiber PPTA, with a diameter of 600D; the material of the second yarn is thermoplastic polyurethane fiber TPU, the diameter of the second yarn is 150D, and the number of strands of the second yarn is 1; the material of the third yarn is polyamide yarn fiber PA, the diameter of the third yarn is 150D, and the number of strands of the third yarn is 7; in some embodiments, the above formula (9) can be used to preset the diameter D of the braided blank line, the width w of the protrusion and the height of the protrusion.

[0120] Step S12: The first yarn is used as the core yarn, and the second yarn and the third yarn are used as the shell yarn, and the first yarn, the second yarn and the third yarn are mixed to obtain the braided yarn. Specifically, step S12 includes: the first yarn feeding mechanism feeds the first yarn, the second yarn feeding mechanism is provided with one, the second yarn feeding mechanism feeds the second yarn, the third yarn feeding mechanism is provided with seven, and the third yarn feeding mechanism feeds the third yarn, the braiding pitch is 3mm, the braiding speed is 800r / min, the braiding pattern is one-on-one, and the first yarn, the second yarn and the third yarn are mixed to obtain the braided yarn;

[0121] Step S13: The braided wire is introduced into the heating mechanism, and the heating mechanism heats the braided wire at a set temperature of 110°C. After heating for 20 seconds, the heated braided wire leaves the heating mechanism, and the heated braided wire is cooled and collected at room temperature to obtain a spider silk structure-imitation mist collection thermoformed braided wire A.

[0122] Example 2: Protrusions symmetrically arranged spider silk structure mist collection thermoformed braided wire B

[0123] Step S21: Setting the parameters of the first yarn, the second yarn and the third yarn, the material of the first yarn is aramid fiber PPTA, with a diameter of 600D; the material of the second yarn is thermoplastic polyurethane fiber TPU, the diameter of the second yarn is 150D, and the number of strands of the second yarn is 2; the material of the third yarn is polyamide yarn fiber PA, the diameter of the third yarn is 150D, and the number of strands of the third yarn is 6; in some embodiments, the above formula (9) can be used to pre-set the diameter D of the braided blank line, the width w of the protrusion and the height of the protrusion.

[0124] Step S22: The first yarn is used as the core yarn, and the second yarn and the third yarn are used as the shell yarn, and the first yarn, the second yarn and the third yarn are mixed to obtain the woven yarn. Specifically, step S22 includes: the first yarn feeding mechanism feeds the first yarn, the second yarn feeding mechanism is provided with two, the second yarn feeding mechanism feeds the second yarn, the third yarn feeding mechanism is provided with six, and the third yarn feeding mechanism feeds the third yarn, the braiding pitch is 2mm, the braiding speed is 1000r / min, the braiding pattern is one-on-one, and the first yarn, the second yarn and the third yarn are mixed to obtain the woven yarn;

[0125] Step S23: The braided wire is introduced into the heating mechanism, and the heating mechanism heats the braided wire at a set temperature of 120°C. After heating for 25 seconds, the heated braided wire leaves the heating mechanism, and the heated braided wire is cooled and collected at room temperature to obtain a spider silk structure-like mist collection thermoformed braided wire B.

[0126] Example 3: Spider silk-like mist collection thermoformed braided wire C with high density of protrusions

[0127] Step S31: Set the parameters of the first yarn, the second yarn and the third yarn. The material of the first yarn is aramid fiber PPTA with a diameter of 600D; the material of the second yarn is thermoplastic polyurethane fiber TPU, the diameter of the second yarn is 150D, and the number of strands of the second yarn is 4; the material of the third yarn is polyamide yarn fiber PA, the diameter of the third yarn is 150D, and the number of strands of the third yarn is 4; in some embodiments, the above formula (9) can be used to pre-set the diameter D of the braided blank line, the width w of the protrusion and the height of the protrusion.

[0128] Step S32: The first yarn is used as the core yarn, and the second yarn and the third yarn are used as the shell yarn, and the first yarn, the second yarn and the third yarn are mixed to obtain the woven yarn. Specifically, step S32 includes: the first yarn feeding mechanism feeds the first yarn, the second yarn feeding mechanism is provided with 4, the second yarn feeding mechanism feeds the second yarn, the third yarn feeding mechanism is provided with 4, the third yarn feeding mechanism feeds the third yarn, the braiding pitch is 2mm, the braiding speed is 1000r / min, the braiding pattern is one-on-one, and the first yarn, the second yarn and the third yarn are mixed to obtain the woven yarn;

[0129] Step S33: The braided wire is introduced into the heating mechanism, and the heating mechanism heats the braided wire at a set temperature of 130°C. After heating for 30 seconds, the heated braided wire leaves the heating mechanism, and the heated braided wire is cooled and collected at room temperature to obtain a spider silk structure-imitation fog collection thermoformed braided wire C.

[0130] Example 4: Spider silk-like mist collection thermoformed braided wire D with high density of protrusions

[0131] Step S41: Setting the parameters of the first yarn, the second yarn and the third yarn, the material of the first yarn is aramid fiber PPTA, with a diameter of 1200D; the material of the second yarn is thermoplastic polyurethane fiber TPU, the diameter of the second yarn is 150D, and the number of strands of the second yarn is 4; the material of the third yarn is polyamide yarn fiber PA, the diameter of the third yarn is 150D, and the number of strands of the third yarn is 4; in some embodiments, the above formula (9) can be used to pre-set the diameter D of the braided blank line, the width w of the protrusion and the height of the protrusion.

[0132] Step S42: The first yarn is used as the core yarn, and the second yarn and the third yarn are used as the shell yarn, and the first yarn, the second yarn and the third yarn are mixed to obtain the woven yarn. Specifically, step S42 includes: the first yarn feeding mechanism feeds the first yarn, the second yarn feeding mechanism is provided with 4, the second yarn feeding mechanism feeds the second yarn, the third yarn feeding mechanism is provided with 4, the third yarn feeding mechanism feeds the third yarn, the braiding pitch is 2mm, the braiding speed is 1000r / min, the braiding pattern is one-on-one, and the first yarn, the second yarn and the third yarn are mixed to obtain the woven yarn;

[0133] Step S43: The braided wire is introduced into the heating mechanism, and the heating mechanism heats the braided wire at a set temperature of 130°C. After heating for 30 seconds, the heated braided wire leaves the heating mechanism, and the heated braided wire is cooled and collected at room temperature to obtain a spider silk structure-imitation mist collection thermoformed braided wire D.

[0134] Example 5: Spider silk-like mist collection thermoformed braided wire E with high density of protrusions

[0135] Step S51: Setting the parameters of the first yarn, the second yarn and the third yarn, the material of the first yarn is aramid fiber PPTA, with a diameter of 1800D; the material of the second yarn is thermoplastic polyurethane fiber TPU, the diameter of the second yarn is 150D, and the number of strands of the second yarn is 4; the material of the third yarn is polyamide yarn fiber PA, the diameter of the third yarn is 150D, and the number of strands of the third yarn is 4; in some embodiments, the above formula (9) can be used to pre-set the diameter D of the braided blank line, the width w of the protrusion and the height of the protrusion.

[0136] Step S52: The first yarn is used as the core yarn, and the second yarn and the third yarn are used as the shell yarn, and the first yarn, the second yarn and the third yarn are mixed to obtain the woven yarn. Specifically, step S52 includes: the first yarn feeding mechanism feeds the first yarn, the second yarn feeding mechanism is provided with 4, the second yarn feeding mechanism feeds the second yarn, the third yarn feeding mechanism is provided with 4, the third yarn feeding mechanism feeds the third yarn, the braiding pitch is 2mm, the braiding speed is 1000r / min, the braiding pattern is one-on-one, and the first yarn, the second yarn and the third yarn are mixed to obtain the woven yarn;

[0137] Step S53: The braided wire is introduced into the heating mechanism, and the heating mechanism heats the braided wire at a set temperature of 130°C. After heating for 30 seconds, the heated braided wire leaves the heating mechanism, and the heated braided wire is cooled and collected at room temperature to obtain the spider silk structure-imitation fog collection thermoformed braided wire E.

[0138] like Fig.13 As shown, compared with the existing PPTA braided wire, the spider silk-like structure fog collection thermoformed braided wire prepared by the present invention has a significantly excellent fog collection effect.

[0139] like Fig.14 As shown, by comparing the fog collection effects of the spider silk structure fog collection thermoformed braided wire A of Example 1, the fog collection effects of the spider silk structure fog collection thermoformed braided wire B of Example 2 and the fog collection thermoformed braided wire C of Example 3, it can be seen that: in the same period of time, the spider silk structure fog collection thermoformed braided wire B of Example 2 and the spider silk structure fog collection thermoformed braided wire C of Example 3 have a regular and larger water collection effect, and the density and size of the protrusions on the surface of the spider silk structure fog collection thermoformed braided wire have a greater influence on its fog collection performance.

[0140] like Fig.15As shown, by comparing the tensile fracture stress-strain curves of the spider silk structure mist collection thermoformed braided wire C before and after heat treatment of Example 3, the tensile fracture stress-strain curves of the spider silk structure mist collection thermoformed braided wire D before and after heat treatment of Example 4, and the tensile fracture stress-strain curves of the spider silk structure mist collection thermoformed braided wire E before and after heat treatment of Example 5, it can be seen that: through the tensile fracture test, the results prove that the mechanical strength of the spider silk structure mist collection thermoformed braided wire is mainly determined by the thickness of the core yarn, and the heat treatment process has little effect on its fracture stress.

[0141] like Fig.16 As shown, the wear resistance of the spider silk structure mist collection thermoformed braided wire can be tested. The wear resistance test method of the spider silk structure mist collection thermoformed braided wire includes: winding and fixing one end of the spider silk structure mist collection thermoformed braided wire, hanging a weight on the other end to maintain tension, using 1000 mesh sandpaper, running at a speed of 60 circles / minute, and grinding the sandpaper on the middle section of the spider silk structure mist collection thermoformed braided wire 1000 times, and then observing the wear of the spider silk structure mist collection thermoformed braided wire. For example, by comparing the wear resistance of the spider silk structure mist collection thermoformed braided wire A of Example 1, the wear resistance of the spider silk structure mist collection thermoformed braided wire B of Example 2, and the wear resistance of the spider silk structure mist collection thermoformed braided wire C of Example 3, it can be seen that the spider silk structure mist collection thermoformed braided wire A of Example 1, the spider silk structure mist collection thermoformed braided wire B of Example 2, and the spider silk structure mist collection thermoformed braided wire C of Example 3 all have a certain wear resistance. The reason is that: since the spider silk structure mist collection thermoformed braided wire has the main mechanical properties provided by the core yarn, the wear of the outer layer has little effect on its overall strength. Therefore, the spider silk structure mist collection thermoformed braided wire has certain durability and wear resistance.

[0142] The drawings are only one of the embodiments of the present invention, and the actual structure is not limited thereto. In short, if ordinary technicians in the field are inspired by it and design a structure and embodiment similar to the technical solution without creativity without departing from the purpose of the present invention, they should all fall within the protection scope of the present invention.

Claims

1. A spider silk-like mist collection thermoformed braided wire, characterized in that: include: A core layer and a shell layer, the shell layer is formed on the periphery of the core layer, the core layer includes a first yarn, the material of the first yarn includes at least one of polyethylene fiber, aramid fiber PPTA and carbon fiber, the shell layer includes a third yarn and a protrusion, the protrusion is formed on the periphery of the third yarn, the material of the third yarn includes one of thermoplastic polyurethane fiber TPU, low-melting point polyester fiber PET, and polyamide yarn fiber PA, the material of the protrusion includes one of thermoplastic polyurethane fiber TPU, low-melting point polyester fiber PET, and polyamide yarn fiber PA; along the length direction of the spider silk structure imitation fog collection thermoformed braided wire, a plurality of protrusions are distributed on the surface of the spider silk structure imitation fog collection thermoformed braided wire.

2. The spider silk-like mist collection thermoformed braided wire according to claim 1, characterized in that: A connecting portion is formed between two adjacent protrusions, the connecting portion connects the third yarn and the first yarn, and the connecting portion connects two adjacent protrusions; and / or, the material of the first yarn is aramid fiber PPTA, the material of the third yarn includes polyamide yarn fiber PA, and the material of the protrusion includes thermoplastic polyurethane fiber TPU.

3. A method for preparing a spider silk-like structure fog collection thermoforming braided wire, preparing a spider silk-like structure fog collection thermoforming braided wire as described in any one of claims 1-2, characterized in that: include: Step S100: setting parameters of the first yarn, the second yarn and the third yarn, wherein the parameters of the first yarn include the material of the first yarn and the diameter of the first yarn; the parameters of the second yarn include the material of the second yarn, the diameter of the second yarn and the number of strands Q of the second yarn; the parameters of the third yarn include the material of the second yarn, the diameter of the third yarn and the number of strands Y of the third yarn; Step S200: The first yarn is used as the core yarn, and the second yarn and the third yarn are used as the shell yarns. The first yarn, the second yarn and the third yarn are mixed and knitted, and the second yarn and the third yarn are formed on the periphery of the first yarn to obtain the braided yarn; Step S300: The braided wire is introduced into a heating mechanism, and the heating mechanism heats the braided wire at a set temperature or a set temperature range. After the set heating time, the heated braided wire leaves the heating mechanism, and the heated braided wire is cooled at room temperature to obtain a spider silk-like structure mist collection thermoformed braided wire.

4. The method for preparing a spider silk-like mist collection thermoforming braided wire according to claim 3, characterized in that: Step S100 includes: Step S101: setting parameters of the first yarn, the parameters of the first yarn include the material of the first yarn, the diameter of the first yarn, the material of the first yarn includes at least one of polyethylene fiber, aramid fiber PPTA and carbon fiber; the diameter of the first yarn is 600D-1800D; Step S102: setting parameters of the second yarn, the parameters of the second yarn include the material of the second yarn, the diameter of the second yarn, and the number of strands Q of the second yarn; the material of the second yarn includes one of thermoplastic polyurethane fiber TPU, low melting point polyester fiber PET, and polyamide yarn fiber PA, and the diameter of the second yarn is 50D-300D; Step S103: Set the parameters of the third yarn, the parameters of the third yarn include the material of the second yarn, the diameter of the third yarn, and the number of strands of the third yarn Y; the material of the third yarn includes one of thermoplastic polyurethane fiber TPU, low melting point polyester fiber PET, and polyamide yarn fiber PA; the diameter of the second yarn is 50D-300D.

5. The method for preparing a spider silk-like mist collection thermoforming braided wire according to claim 4, characterized in that: Step S200 includes: Step S201: a first yarn feeding mechanism feeds a first yarn, Q second yarn feeding mechanisms are provided, each second yarn feeding mechanism feeds a second yarn, and Y third yarn feeding mechanisms are provided, each third yarn feeding mechanism feeds a third yarn; Step S202: Use the first yarn as the core yarn, the second yarn and the third yarn as the shell yarn, the weaving pitch is 1-8mm, the weaving speed is 800r / min-1500r / min, the weaving pattern is one-on-one, the first yarn, the second yarn and the third yarn are mixed, and the second yarn and the third yarn are formed on the periphery of the first yarn to obtain the weaving yarn.

6. The method for preparing a spider silk-like mist collection thermoforming braided wire according to claim 5, characterized in that: The second yarn strand number Q and the third yarn strand number Y satisfy: Q+Y=QY, where QY is the preset strand number.

7. The method for preparing a spider silk-like mist collection thermoforming braided wire according to claim 6, characterized in that: The preset number of strands QY is 8 strands, the weaving pitch is 2 mm or 3 mm, the weaving speed is 800 r / min or 1000 r / min, the set temperature of the heating mechanism is 50°C-200°C, and the set time is 5s-120s.

8. The method for preparing a spider silk-like mist collection thermoforming braided wire according to claim 7, characterized in that: The material of the first yarn is aramid fiber PPTA, the material of the second yarn includes thermoplastic polyurethane fiber TPU, the third yarn includes polyamide yarn fiber PA, and the width w of the protrusion, the height h of the protrusion, and the diameter D of the braided wire meet the following conditions: Among them, w is the width of a protrusion when projected vertically downward along the direction of the central axis of the spider silk structure fog collection thermoforming braided wire; h is the height of the protrusion along the cross-sectional direction of the spider silk structure fog collection thermoforming braided wire; and D is the diameter of the braided blank wire.

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